Objective:

• Students will:
  • Be able to distinguish between block and stream ciphers.
  • Explain how block and stream ciphers operate.
  • Be able to provide examples of where these ciphers would be used.

Standards:

CompTIA Security+ SYO-701 Objective:

1.4 – Explain the importance of using appropriate cryptographic solutions

Guiding Question:

How are ciphers categorized in today’s usage and how are they used for the protection of data?

Resources:

• Lesson 2.2.1 – Cipher Types and Early Examples.pptx and Lab 2.2.1 – Encrypting with ChaCha20 and AES.pptx presentations and Lab 2.2.1 – Encrypting with ChaCha20 and AES form available on Google Classroom

Assignment:

1. Read the Lesson 2.2.1 – Cipher Types and Usage.pptx presentation in today’s class.
2. Complete the Lab 2.2.1 – Encrypting with ChaCha20 and AES Activity form using the Lab 2.2.1 – Encrypting with ChaCha20 and AES.pptx Powerpoint Presentation posted in the Google Classroom.

Assigned: April 13th, 2026
Teacher Pacing Due Date: April 14th, 2026